Printing film positioning detection device for printing roller

Abstract

The present application relates to a printing film positioning detection device and detection method for a printing roller, and relates to the field of printing equipment, in order to solve the problem of low detection accuracy of workers in detecting the joints of printing films, wherein the printing film positioning detection device for a printing roller comprises a machine body, a mounting bracket and a detection mechanism; the mounting bracket is arranged on the machine body, and a detection area for detachably connecting the printing roller is arranged on the mounting bracket; the detection mechanism comprises an image capturer and an image analysis component for analyzing the image generated by the image capturer, and the image capturer is arranged on the machine body, and the image capturer faces the detection area. The present application has the effect of improving the stability of the printing film during detection by mounting the printing roller on the mounting bracket, and after the image capturer captures the image of the printing film on the printing roller, the image is analyzed by the image analysis component, thereby improving the detection accuracy of the joint seam of the printing film.

Description

Technical Field

[0001] The present application relates to the field of printing equipment, and in particular to a printing film positioning detection device for a printing roller. Background Art

[0002] With the development of modern technology, various types of modern printing presses have been widely used in the printing process, and the printing roller is an important component of the printing press.

[0003] Before printing, the printing roller is usually coated with a soft printing film on its outer wall. After coating, the butt joint of the printing film needs to be parallel to the axis of the printing roller. In order to improve the accuracy of the printed pattern, after coating the printing film on the printing roller, the workers need to use tools such as rulers to inspect the butt joints formed at both ends of the printing film. After the inspection is completed, the printing roller coated with the printing film is installed on the printing machine for use.

[0004] With respect to the above-mentioned related technologies, the inventors found the following defects: when workers inspect the butt joints of the printed film, they measure and observe with a ruler, but it is difficult to ensure that the butt joints of the printed film are parallel to the axis of the printing roller, and the inspection accuracy is low. Summary of the invention

[0005] In order to improve the accuracy of detecting a printing film coated on a printing roller, the present application provides a printing film positioning detection device for a printing roller.

[0006] On the one hand, the present application provides a printing film positioning detection device for a printing roller, which adopts the following technical solution:

[0007] A printing film positioning detection device for a printing roller comprises a machine body, a mounting bracket and a detection mechanism; the mounting bracket is arranged on the machine body, and a detection area for detachably connecting the printing roller is provided on the mounting bracket; the detection mechanism comprises an image capture device and an image analysis component for analyzing an image generated by the image capture device, the image capture device is arranged on the machine body, and the image capture device faces the detection area.

[0008] By adopting the above technical solution, when inspecting the printed film on the printing roller, the printing roller is first installed on the mounting bracket to improve the stability of the printed film during inspection. After the image camera captures the image of the printed film on the printing roller, the image is analyzed by the image analysis component, thereby improving the detection accuracy of the printed film connection seam, and the detection efficiency is high, reducing the labor intensity of manual labor.

[0009] Optionally, at least two groups of image capture devices are provided, the two groups of image capture devices are distributed along the axis direction of the printing roller, and the image capture devices are slidably provided along the axis direction of the printing roller.

[0010] By adopting the above technical solution, at least two groups of image capture devices are set to simultaneously capture the printed film on the printing roller, so that the imaging effect is better, and the image capture device can slide along the axial direction of the printing roller. When the width of the printed film is different, the position of the image capture device can be adjusted according to the detection needs, so as to achieve better imaging effect and improve the detection accuracy.

[0011] Optionally, the detection mechanism also includes a support frame, on which a slide rail and a slider slidably adapted to the slide rail are provided, the image capture device is arranged on the corresponding slider, the extension direction of the slide rail is parallel to the axial direction of the printing roller, and the slider is provided with a first locking member for fixing its sliding position.

[0012] By adopting the above technical solution, the slider is driven to slide on the slide rail, so that the distance between the two groups of sliders can be adjusted, thereby adjusting the distance between the two groups of image cameras. The structure is simple and easy to operate. After adjustment, the position of the slider is fixed by the first locking member, thereby determining the position of the two groups of image cameras.

[0013] Optionally, the image capture device is slidably disposed on the slider, and the slider is provided with a slide groove that is slidably adapted to the image capture device. The slide groove extends on a horizontal plane and the extension direction is perpendicular to the axial direction of the printing roller. The image capture device is provided with a second locking member for fixing its sliding position.

[0014] By adopting the above technical solution, the image capture device slides inside the slide groove and can be adjusted to a suitable position, and the position of the image capture device is fixed by the second locking member, so that the shooting picture of the image capture device can be accurately aligned with the printing film on the printing roller, so that the shooting effect of the image capture device is better.

[0015] Optionally, the mounting bracket is provided with a positioning member for fixing one end of the printing roller and an abutment member for fixing the other end of the printing roller, and the abutment member is movably arranged along the axial direction of the printing roller.

[0016] By adopting the above technical scheme, the positioning member and the abutment member can cooperate to fix the two ends of the printing roller, so as to facilitate the detection of the printing film on the printing roller, and the abutment member is movably arranged along the axial direction of the printing roller. By moving the abutment member, the distance between the positioning member and the abutment member can be changed, thereby facilitating the installation and disassembly of the printing roller, making the detection more convenient and reducing the labor intensity of workers.

[0017] Optionally, both ends of the printing roller are provided with plug-in grooves, the plug-in grooves and the printing roller are located on the same axis, the positioning member and the abutment member are both plug-fitted to the plug-in grooves, and the mounting bracket is provided with a first driving member for driving the abutment member to movably plug into the plug-in grooves.

[0018] By adopting the above technical solution, when installing the printing roller, the positioning member is first inserted into the plug-in groove at one end of the printing roller, and then the abutment member is driven to move by starting the first driving member, so that the abutment member is inserted into the plug-in groove at the other end of the printing roller, thereby fixing the two ends of the printing roller, the installation is stable and the operation is convenient, and the detection efficiency of the printed film is improved.

[0019] Optionally, the positioning member and the abutment member are both provided with a limit block which is movably abutted against the end face of the printing roller, the limit block and the plug-in slot are located on the same axis, and the projection area of ​​the limit block along the axial direction close to the end face of one end of the printing roller is smaller than the projection area of ​​the limit block along the axial direction away from the end face of one end of the printing roller.

[0020] By adopting the above technical scheme, the limit block can have a certain positioning effect on the end of the printing roller, making the printing roller more stable during detection, and the limit block is larger at the end away from the printing roller, making the limit block more stable during installation, thereby improving the effect of fixing the printing roller, and the limit block is smaller at the end away from the printing roller, reducing the friction between the limit block and the printing roller, so that the printing roller can be easily rotated after installation to adjust the position of the connecting seam of the printing film for shooting by the image camera.

[0021] Optionally, the machine body is provided with a second driving component for driving the mounting bracket to move closer to or away from the image capture device, and the machine body is also provided with limit frames respectively located at both ends of the mounting bracket.

[0022] By adopting the above technical solution, the second driving member can drive the mounting bracket to be raised or lowered to adjust the printing roller on the mounting bracket to maintain an appropriate distance with the image capture device. When inspecting the printed film on the printing roller, the driving member is started to adjust the mounting bracket according to the specifications of the printing roller to improve the inspection effect. The limit frame can limit the mounting bracket to improve the stability of the mounting bracket during movement.

[0023] Optionally, a card slot is provided on one side of the limit frames that are close to each other, and the card slot extends along the movement direction of the mounting bracket. Blocks that are slidably matched with the card slot are provided at both ends of the mounting bracket.

[0024] By adopting the above technical solution, when the mounting bracket is raised and lowered, the blocks at both ends of the mounting bracket slide in the slots of the limit frame, thereby further improving the stability of the mounting bracket during the adjustment process, keeping the printing roller stable, and making the detection result more accurate.

[0025] In summary, the present application includes at least the following beneficial technical effects:

[0026] By setting up a mounting bracket, an image capturer and an image analysis component, when testing the printed film on the printing roller, the printing roller is first mounted on the mounting bracket to improve the stability of the printed film during testing. After the image capturer captures an image of the printed film on the printing roller, the image analysis component analyzes the image, thereby improving the detection accuracy of the printed film joint seam, and the detection efficiency is high, reducing the labor intensity of manual labor;

[0027] By arranging a support frame, a slide rail, a slider, a slide groove, a first locking member, and a second locking member, the slider is driven to slide on the slide rail, so that the distance between the two groups of sliders can be adjusted. After the adjustment, the position of the slider is fixed by the first locking member, thereby adjusting the distance between the two groups of image capture devices. Then, the image capture device is made to slide inside the slide groove, and the position of the image capture device is fixed by the second locking member, so that the image capture device can accurately align the image capture screen with the printing film on the printing roller, so that the image capture device has a better shooting effect.

[0028] By setting the positioning member, the abutment member, the plug-in slot and the first driving member, when installing the printing roller, the positioning member is first inserted into the plug-in slot at one end of the printing roller, and then the abutment member is driven to move by starting the first driving member to insert the abutment member into the plug-in slot at the other end of the printing roller, thereby fixing the two ends of the printing roller, facilitating the installation and disassembly of the printing roller, making detection more convenient, and improving the detection efficiency of the printed film. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0030] Figure 2 is a front view structural schematic diagram of an embodiment of the present application;

[0031] Figure 3 is a schematic diagram of the overall structure of the display mounting bracket of an embodiment of the present application;

[0032] Figure 4 It is a schematic diagram of the overall structure of the display detection mechanism of the embodiment of the present application.

[0033] Figure numerals: 1. machine body; 11. second driving member; 12. limit frame; 121. card slot; 2. mounting bracket; 21. detection area; 22. positioning member; 23. abutment member; 24. first driving member; 25. limit block; 26. card block; 3. detection mechanism; 31. image capture device; 32. image analysis component; 33. support frame; 34. slide rail; 35. slider; 351. slide slot; 36. first locking member; 37. second locking member; 4. printing roller; 41. plug-in slot. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4 This application is described in further detail.

[0035] On the one hand, an embodiment of the present application discloses a printing film positioning detection device for a printing roller.

[0036] Reference Figure 1 The printing film positioning detection device for the printing roller comprises a machine body 1, a mounting bracket 2 and a detection mechanism 3. The positioning detection of the printing film is performed on the machine body 1. The printing roller 4 with the printing film wound around it is fixed by the mounting bracket 2, and the printing film outside the printing film fixed on the mounting bracket 2 is detected by the detection mechanism 3.

[0037] Reference Figure 1-3 When detecting the printed film on the printing roller 4, the printing roller 4 with the printed film wound thereon needs to be fixedly installed first, wherein the mounting bracket 2 is mounted on the machine body 1, and a detection area 21 for detachably installing the printing roller 4 is provided on the mounting bracket 2, an opening is provided at one end of the mounting bracket 2, the detection area 21 is located at the opening, and the distance between the two ends of the opening is greater than the length of the printing roller 4, a positioning member 22 for fixing one end of the printing roller 4 is fixedly connected to the mounting bracket 2 at one end of the opening, and an abutment member 23 for fixing the other end of the printing roller 4 is movably provided at the other end of the opening of the mounting bracket 2, and a plug-in groove 41 is provided at both ends of the printing roller 4, and the plug-in groove 41 and the printing roller 4 are located on the same axis, and the positioning member 22 and the abutment member 23 are both plugged and matched with the plug-in groove 41, and in this embodiment, the positioning member 22 and the abutment member 23 are two groups of rods located on the same axis;

[0038] In order to facilitate the installation of the printing roller 4, the abutment member 23 is movably arranged along the axial direction of the printing roller 4. A first driving member 24 for driving the abutment member 23 to be movably plugged into the plug-in slot 41 is fixedly installed on the mounting bracket 2. In this embodiment, the first driving member 24 is a cylinder. The abutment member 23 is coaxially fixedly connected to the output shaft of the cylinder. When the cylinder is started, the abutment member 23 can be driven to be inserted into the plug-in slot 41 or to be separated from the plug-in slot 41.

[0039] In order to improve the stability of the installation of the printing roller 4, the positioning member 22 and the abutting member 23 are both integrally formed with a limit block 25 that movably abuts against the end face of the printing roller 4. The limit block 25 and the positioning member 22 or the abutting member 23 are located on the same axis. After the positioning member 22 and the abutting member 23 are inserted into the plug-in groove 41 on the printing roller 4, the limit block 25 abuts against the end face of the printing roller 4, making the two ends of the printing roller 4 more stable; after the printing roller 4 is installed, the connecting seam of its printing film needs to be rotated to a suitable position. In order to reduce the friction between the limit block 25 and the printing roller 4, the projection area of ​​the end face of the limit block 25 close to the printing roller 4 along the axial direction is smaller than the projection area of ​​the end face of the limit block 25 away from the printing roller 4 along the axial direction. By installing the limit block 25 on the mounting bracket 2 or on the cylinder, the installation of the positioning member 22 and the abutting member 23 is made more stable.

[0040] Reference Figure 1 , 2 4. To facilitate the detection of the printed film, the detection mechanism 3 includes a support frame 33, an image capture device 31 and an image analysis component 32 mounted on the support frame 33. The image capture device 31 captures the printing roller 4, and the image analysis component 32 analyzes the image generated by the image capture device 31.

[0041] The support frame 33 is fixedly connected to the machine body 1, and a slide rail 34 is fixedly connected to the support frame 33. The extension direction of the slide rail 34 is parallel to the axial direction of the printing roller 4. Two groups of sliders 35 are arranged on the slide rail 34. In this embodiment, two groups of image capture devices 31 are arranged. The two groups of image capture devices 31 are arranged on corresponding sliders 35. The sliders 35 are provided with first locking members 36 for fixing their sliding positions. The first locking members 36 are specifically top screws. The first locking members 36 are movably abutted against the slide rail 34, driving the slider 35 to slide on the slide rail 34, and the distance between the two groups of sliders 35 can be adjusted. The sliders 35 are then fixed by the first locking members 36, thereby adjusting the distance between the two groups of image capture devices 31.

[0042] A slide groove 351 is provided at the bottom of the slider 35. The slide groove 351 extends on a horizontal plane and the extending direction is perpendicular to the axial direction of the printing roller 4. The image capture device 31 is slidably arranged inside the slide groove 351. The image capture device 31 is provided with a second locking member 37 for fixing its sliding position. The second locking member 37 is also a top screw. The second locking member 37 is movably abutted against the inner wall of the slide groove 351. The image capture device 31 is fixed by sliding the image capture device 31 and then rotating the second locking member 37, thereby determining the position of the image capture device 31.

[0043] The image capture device 31 captures the connection seam of the printed film as a thin line. The image analysis component 32 includes a display screen with a calibration line on the display screen. By detecting the difference between the connection seam and the calibration line, it is detected whether the connection seam of the printed film is flush.

[0044] Reference Figure 1-2 , in order to be suitable for printing rollers 4 of different specifications, a second driving member 11 for driving the mounting bracket 2 to be close to or away from the image capture device 31 is provided on the machine body 1, and the second driving member 11 is an electric push rod, and the electric push rod drives the mounting bracket 2 to be raised or lowered to adjust the printing roller 4 on the mounting bracket 2 to maintain a suitable distance with the image capture device 31;

[0045] In order to improve the stability of the mounting bracket 2 when it moves, the machine body 1 is also fixedly connected with limit frames 12 respectively located at both ends of the mounting bracket 2, and a card slot 121 is opened on the side where the two sets of limit frames 12 are close to each other. The card slot 121 extends along the movement direction of the mounting bracket 2, and both ends of the mounting bracket 2 are fixedly connected with a card block 26 that is slidably adapted to the card slot, and the card block 26 is embedded in the card slot 121. When the mounting bracket 2 is raised and lowered, the card blocks 26 at both ends of the mounting bracket 2 slide in the card slot 121 of the limit frame 12, thereby further improving the stability of the mounting bracket 2 during the adjustment process, so that the printing roller 4 remains stable, and after the second driving member 11 drives the mounting bracket 2 to move, the printing roller 4 is located at a suitable height, so that detection can be better performed.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A printing film positioning detection device for a printing roller, characterized in that: It comprises a machine body (1), a mounting bracket (2) and a detection mechanism (3); The mounting bracket (2) is arranged on the machine body (1), and a detection area (21) for detachably connecting the printing roller (4) is provided on the mounting bracket (2); The detection mechanism (3) comprises an image capture device (31) and an image analysis component (32) for analyzing an image generated by the image capture device (31), wherein the image capture device (31) is disposed on the machine body (1), and the image capture device (31) faces the detection area (21); At least two groups of the image capture devices (31) are provided, the two groups of the image capture devices (31) are distributed along the axis direction of the printing roller (4), and the image capture devices (31) are slidably arranged along the axis direction of the printing roller (4); The detection mechanism (3) further comprises a support frame (33), the support frame (33) being provided with a slide rail (34) and a slider (35) slidably adapted to the slide rail (34), the image capture device (31) being provided on the corresponding slider (35), the extension direction of the slide rail (34) being parallel to the axial direction of the printing roller (4), the slider (35) being provided with a first locking member (36) for fixing its sliding position, the first locking member (36) being movably abutted against the slide rail (34), driving the slider (35) to slide on the slide rail (34), and being capable of adjusting the distance between the two groups of sliders (35), and fixing the slider (35) by the first locking member (36), thereby adjusting the distance between the two groups of image capture devices (31); The image capture device (31) is slidably disposed on the slider (35); the slider (35) is provided with a slide groove (351) slidably adapted to the image capture device (31); the slide groove (351) extends on a horizontal plane and the extension direction is perpendicular to the axial direction of the printing roller (4); the image capture device (31) is provided with a second locking member (37) for fixing the sliding position thereof; The image capture device (31) captures the connection seam of the printed film as a thin line, and the image analysis component (32) includes a display screen having a calibration line on the display screen. By detecting the difference between the connection seam and the calibration line, it is detected whether the connection seam of the printed film is flush; The mounting bracket (2) is provided with a positioning member (22) for fixing one end of the printing roller (4) and an abutment member (23) for fixing the other end of the printing roller (4); the abutment member (23) is movably arranged along the axial direction of the printing roller (4).

2. The printing film positioning detection device for a printing roller according to claim 1, characterized in that: Both ends of the printing roller (4) are provided with plugging grooves (41), the plugging grooves (41) and the printing roller (4) are located on the same axis, the positioning member (22) and the abutment member (23) are both plugged and matched with the plugging grooves (41), and the mounting bracket (2) is provided with a first driving member (24) for driving the abutment member (23) to be movably plugged with the plugging grooves (41).

3. The printing film positioning detection device for a printing roller according to claim 2, characterized in that: The positioning member (22) and the abutment member (23) are both provided with a limit block (25) that movably abuts against the end face of the printing roller (4); the limit block (25) and the insertion slot (41) are located on the same axis; the projection area of ​​the end face of the limit block (25) close to the printing roller (4) along the axis direction is smaller than the projection area of ​​the end face of the limit block (25) away from the printing roller (4) along the axis direction.

4. The printing film positioning detection device for a printing roller according to claim 1, characterized in that: The machine body (1) is provided with a second driving member (11) for driving the mounting bracket (2) to move closer to or farther from the image capture device (31), and the machine body (1) is also provided with limit brackets (12) respectively located at both ends of the mounting bracket (2).

5. The printing film positioning detection device for a printing roller according to claim 4, characterized in that: A card slot (121) is provided on each of the mutually adjacent sides of the limit frames (12), the card slot (121) extending along the movement direction of the mounting bracket (2), and card blocks (26) slidably adapted to the card slot (121) are provided at both ends of the mounting bracket (2).

Images